diff --git a/micropython/bootloader/main.c b/micropython/bootloader/main.c
index 139786b1..5a594463 100644
--- a/micropython/bootloader/main.c
+++ b/micropython/bootloader/main.c
@@ -35,14 +35,14 @@ void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, ui
     }
     uint32_t datalen = *(uint32_t *)(vimg + 8);
     display_image(60, 32, w, h, vimg + 12, datalen);
-    display_text_center(120, 192, vstr, vstr_len, FONT_BOLD, 0xFFFF, 0x0000);
-    char ver_str[] = "v0.0.0.0";
+    display_text_center(120, 192, vstr, vstr_len, FONT_BOLD, COLOR_WHITE, COLOR_BLACK);
+    char ver_str[] = "0.0.0.0";
     // TODO: fixme - the following does not work for values >= 10
-    ver_str[1] += fw_version & 0xFF;
-    ver_str[3] += (fw_version >> 8) & 0xFF;
-    ver_str[5] += (fw_version >> 16) & 0xFF;
-    ver_str[7] += (fw_version >> 24) & 0xFF;
-    display_text_center(120, 215, ver_str, -1, FONT_BOLD, 0x7BEF, 0x0000);
+    ver_str[0] += fw_version & 0xFF;
+    ver_str[2] += (fw_version >> 8) & 0xFF;
+    ver_str[4] += (fw_version >> 16) & 0xFF;
+    ver_str[6] += (fw_version >> 24) & 0xFF;
+    display_text_center(120, 215, ver_str, -1, FONT_BOLD, COLOR_GRAY64, COLOR_BLACK);
     display_refresh();
 }
 
diff --git a/micropython/extmod/modtrezorui/display.h b/micropython/extmod/modtrezorui/display.h
index dde0fcaf..42e2fc78 100644
--- a/micropython/extmod/modtrezorui/display.h
+++ b/micropython/extmod/modtrezorui/display.h
@@ -25,6 +25,16 @@
 
 #define LOADER_ICON_SIZE 64
 
+#define RGB16(R, G, B) ((R & 0xF8) << 8) | ((G & 0xFC) << 3) | ((B & 0xF8) >> 3)
+
+#define COLOR_WHITE      RGB16(255, 255, 255)
+#define COLOR_GRAY128    RGB16(127, 127, 127)
+#define COLOR_GRAY64     RGB16(63, 63, 63)
+#define COLOR_BLACK      RGB16(0, 0, 0)
+#define COLOR_RED128     RGB16(127, 0, 0)
+#define COLOR_GREEN128   RGB16(0, 127, 0)
+#define COLOR_BLUE128    RGB16(0, 0, 127)
+
 // provided by port
 
 int display_init(void);
diff --git a/micropython/trezorhal/common.c b/micropython/trezorhal/common.c
index cbabcc90..4a668710 100644
--- a/micropython/trezorhal/common.c
+++ b/micropython/trezorhal/common.c
@@ -3,9 +3,6 @@
 #include "common.h"
 #include "display.h"
 
-#define FATAL_FGCOLOR 0xFFFF
-#define FATAL_BGCOLOR 0x7800
-
 void __attribute__((noreturn)) __fatal_error(const char *msg, const char *file, int line, const char *func) {
     for (volatile uint32_t delay = 0; delay < 10000000; delay++) {
     }
@@ -18,7 +15,7 @@ void __attribute__((noreturn)) __fatal_error(const char *msg, const char *file,
         display_print("\nFunc: ", -1); display_print(func, -1);
     }
     display_print("\n", 1);
-    display_print_out(FATAL_FGCOLOR, FATAL_BGCOLOR);
+    display_print_out(COLOR_WHITE, COLOR_RED128);
     for (;;) {
         display_backlight(255);
         HAL_Delay(950);
diff --git a/micropython/trezorhal/common.h b/micropython/trezorhal/common.h
index c052ec61..03cc5e99 100644
--- a/micropython/trezorhal/common.h
+++ b/micropython/trezorhal/common.h
@@ -18,7 +18,7 @@ void jump_to(uint32_t address);
 
 // common helper macros
 
-#define DPRINT(X)   do { display_print(X, -1);      display_print_out(0xFFFF, 0x0000); } while(0)
-#define DPRINTLN(X) do { display_print(X "\n", -1); display_print_out(0xFFFF, 0x0000); } while(0)
+#define DPRINT(X)   do { display_print(X, -1);      display_print_out(COLOR_WHITE, COLOR_BLACK); } while(0)
+#define DPRINTLN(X) do { display_print(X "\n", -1); display_print_out(COLOR_WHITE, COLOR_BLACK); } while(0)
 
 #endif