diff --git a/keyboards/keebio/iris/keymaps/csc027/config.h b/keyboards/keebio/iris/keymaps/csc027/config.h
index ec4c2bbc65a..80a8c57cbad 100644
--- a/keyboards/keebio/iris/keymaps/csc027/config.h
+++ b/keyboards/keebio/iris/keymaps/csc027/config.h
@@ -28,10 +28,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_HUE_STEP 8
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
-
-#define USB_POLLING_INTERVAL_MS 1
-
-#if defined(TAP_CODE_DELAY)
-#    undef TAP_CODE_DELAY
-#endif
-#define TAP_CODE_DELAY 10
diff --git a/keyboards/keebio/iris/keymaps/csc027/rules.mk b/keyboards/keebio/iris/keymaps/csc027/rules.mk
index e922161e3c2..6fff152f60a 100644
--- a/keyboards/keebio/iris/keymaps/csc027/rules.mk
+++ b/keyboards/keebio/iris/keymaps/csc027/rules.mk
@@ -1,6 +1,6 @@
 BACKLIGHT_ENABLE = yes
 CONSOLE_ENABLE = no
-EXTRAKEY_ENABLE = no
+EXTRAKEY_ENABLE = yes
 LTO_ENABLE = yes
 MOUSEKEY_ENABLE = yes
 NKRO_ENABLE = yes
diff --git a/keyboards/planck/keymaps/csc027/config.h b/keyboards/planck/keymaps/csc027/config.h
index a3b69beb5a7..2a620db279f 100644
--- a/keyboards/planck/keymaps/csc027/config.h
+++ b/keyboards/planck/keymaps/csc027/config.h
@@ -19,10 +19,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define NO_ACTION_MACRO
 #define NO_ACTION_FUNCTION
-
-#define USB_POLLING_INTERVAL_MS 1
-
-#if defined(TAP_CODE_DELAY)
-#    undef TAP_CODE_DELAY
-#endif
-#define TAP_CODE_DELAY 10
diff --git a/keyboards/planck/keymaps/csc027/rules.mk b/keyboards/planck/keymaps/csc027/rules.mk
index d6b6894bf1e..0c35b2c28fd 100644
--- a/keyboards/planck/keymaps/csc027/rules.mk
+++ b/keyboards/planck/keymaps/csc027/rules.mk
@@ -1,6 +1,8 @@
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE = no
 COMMAND_ENABLE = no
 CONSOLE_ENABLE = no
-EXTRAKEY_ENABLE = no
+EXTRAKEY_ENABLE = yes
 LTO_ENABLE = no
+MOUSEKEY_ENABLE = yes
+NKRO_ENABLE = yes
 RGBLIGHT_ENABLE = no
diff --git a/users/csc027/custom_rgb.c b/users/csc027/custom_rgb.c
index 1d3232d72ca..657d40d7af6 100644
--- a/users/csc027/custom_rgb.c
+++ b/users/csc027/custom_rgb.c
@@ -28,15 +28,15 @@ void keyboard_post_init_user(void) {
         rgblight_sethsv_noeeprom((i + user_hue) % 256, 255, 255);
         wait_ms(5);
     }
-    rgblight_sethsv_noeeprom(0, 0, 0);
+    rgblight_sethsv_noeeprom(HSV_BLACK);
 }
 
 void on_usb_led_off(void) {
-    rgblight_sethsv_noeeprom(0, 0, rgblight_get_val() - 85);
+    rgblight_sethsv_noeeprom(HS_GRAY, rgblight_get_val() - 85);
 }
 
 void on_usb_led_on(void) {
-    rgblight_sethsv_noeeprom(0, 0, rgblight_get_val() + 85);
+    rgblight_sethsv_noeeprom(HS_GRAY, rgblight_get_val() + 85);
 }
 
 #endif
diff --git a/users/csc027/defines.h b/users/csc027/defines.h
index 9654cd9f025..85d7d065b7a 100644
--- a/users/csc027/defines.h
+++ b/users/csc027/defines.h
@@ -183,7 +183,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  * |-----------------------------------|  |-----------------------------------|
  * |     |     | App | LCAD|MRDCC|NmLck|  |MVTDL|MVTDC|MVTDN|MVTDR|     |     |
  * |-----------------------------------|  |-----------------------------------|
- * |     |     |     |     |     |     |  |     |     |     |     |     |     |
+ * |     |     |MStop|MPrev|MPlay|MNext|  |MMute|MVolD|MVolD|     |     |     |
  * |-----------------------------------|  |-----------------------------------|
  * |     |     |     |     |     |     |  |     |     |     |     |     |     |
  * `-----------------------------------'  `-----------------------------------'
@@ -191,12 +191,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define ___________________CONVENIENCE_L1__________________  XXXXXXX,  XXXXXXX,  KC_INS,   KC_SLCK,  KC_PSCR,  XXXXXXX
 #define ___________________CONVENIENCE_L2__________________  _______,  XXXXXXX,  KC_APP,   MC_lcad,  MC_rdcc,  KC_NLCK
-#define ___________________CONVENIENCE_L3__________________  _______,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX
+#define ___________________CONVENIENCE_L3__________________  _______,  XXXXXXX,  KC_MSTP,  KC_MPRV,  KC_MPLY,  KC_MNXT
 #define ___________________CONVENIENCE_L4__________________  _______,  _______,  _______,  _______,  _______,  _______
 
 #define ___________________CONVENIENCE_R1__________________  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  KC_BSPC
 #define ___________________CONVENIENCE_R2__________________  MC_vtdl,  MC_vtdc,  MC_vtdn,  MC_vtdr,  XXXXXXX,  XXXXXXX
-#define ___________________CONVENIENCE_R3__________________  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  _______
+#define ___________________CONVENIENCE_R3__________________  KC_MUTE,  KC_VOLD,  KC_VOLU,  XXXXXXX,  XXXXXXX,  _______
 #define ___________________CONVENIENCE_R4__________________  _______,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX,  XXXXXXX
 
 /* Windows Terminal Layer
@@ -321,3 +321,25 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     CUSTOM_NAME(vtdc)       CUSTOM_STRING(SS_LCTL(SS_LGUI(SS_TAP(X_F4))))     CUSTOM_DELIM() \
     CUSTOM_NAME(vtdn)       CUSTOM_STRING(SS_LCTL(SS_LGUI("d")))              CUSTOM_DELIM() \
     CUSTOM_NAME(vtdr)       CUSTOM_STRING(SS_LCTL(SS_LGUI(SS_TAP(X_RIGHT))))
+
+// Additional color definitions for simplicity
+#define HS_AZURE       132, 102
+#define HS_BLACK         0,   0
+#define HS_BLUE        170, 255
+#define HS_CHARTREUSE   64, 255
+#define HS_CORAL        11, 176
+#define HS_CYAN        128, 255
+#define HS_GOLD         36, 255
+#define HS_GOLDENROD    30, 218
+#define HS_GRAY          0,   0
+#define HS_GREEN        85, 255
+#define HS_MAGENTA     213, 255
+#define HS_ORANGE       28, 255
+#define HS_PINK        234, 128
+#define HS_PURPLE      191, 255
+#define HS_RED           0, 255
+#define HS_SPRINGGREEN 106, 255
+#define HS_TEAL        128, 255
+#define HS_TURQUOISE   123,  90
+#define HS_WHITE         0,   0
+#define HS_YELLOW       43, 255