Got rid of (most of) all of the warnings.

src/effect_bell.cpp

@@ -8,7 +8,7 @@ void BellEffect::loop() {
     for (int y = 0; y < 16; y++) {
       for (int x = 0; x < 2; x++) {
         for (int z = 0; z < 8; z++) {
-          leds[XYsafe(x * 8 + z, y)] = sprite_bell[y * 2 + x] >> (7 - z) & 1 ^ invert ? color_on : color_off;
+          leds[XYsafe(x * 8 + z, y)] = (sprite_bell[y * 2 + x] >> (7 - z) & 1) ^ invert ? color_on : color_off;
         }
       }
     }

src/effect_big_clock.cpp

@@ -11,7 +11,7 @@ void BigClockEffect::drawNumber(uint8_t number, int x, int y, CRGB color) {
 }
 
 void BigClockEffect::drawText(char *text, int x, int y, CRGB color) {
-  for (int i = 0; i < strlen(text); i++) {
+  for (uint8_t i = 0; i < strlen(text); i++) {
     drawSprite(font_char(numbers4x7, text[i]), x + i * 4, y, color);
   }
 }

src/fastled.cpp

@@ -1,4 +1,3 @@
-#include <FastLED.h>
 #include "my_fastled.h"
 
 CRGB leds[LED_COUNT];

src/text.cpp

@@ -20,7 +20,7 @@ void drawDigit(Window window, unsigned char* font, int w, int h, int x, int y, i
 }
 
 void drawText(Window window, char *font, int w, int h, char *text, int x, int y, CRGB color) {
-  for (int i = 0; i < strlen(text); i++) {
+  for (uint16_t i = 0; i < strlen(text); i++) {
     drawChar(window, font5x7, 5, 7, x+i*(w+1), y, text[i], color);
   }
 }