Background Colors

; This ROM defines the colors used for the image backgrounds (not the text background).

; The comments in MAME say:
;
; /* the palette is a 32x8 PROM with many colors repeated. The address of */
; /* the colors to pick is as follows: */
; /* xbb00: mountains */
; /* 0xxbb: hills */
; /* 1xxbb: city */

; Pixel colors by experimenting
;             00    01     10     11
; Hills:      --    20     00     70
; Mountains:  --    C0     00     A0
; City:       --    00     77     70

; Colors used in color sets:
;
; 20    00 97 00     
; 70    00 DE 51     
; 77    FF DE 51     
; C0    00 00 FF     
; A0    00 97 AE     

0000: 00 20 00 70 ; ----      ----     
0004: C0 20 00 70 ;           ----     
0008: 00 20 00 70 ; ----      ----     
000C: A0 20 00 70 ;           ----     
;
0010: 00 00 77 70 ; ---- ----          
0014: C0 00 77 70 ;      ----          
0018: 00 00 77 70 ; ---- ----          
001C: A0 00 77 70 ;      ----