-#define rand_incolor_steps(f) (min_incolor_steps[f] + \
- (rand() % range_incolor_steps[f]))
-#define rand_fade_steps(f) (min_fade_steps[f] + \
- (rand() % range_fade_steps[f]))
+#define rand_incolor_steps(f) (min_incolor_steps[f & 1] + \
+ (rand() % range_incolor_steps[f & 1]))
+#define rand_fade_steps(f) (min_fade_steps[f & 1] + \
+ (rand() % range_fade_steps[f & 1]))