% -500 20000
nv:255
-500:0:0:10 -300:0:0:20
-300:0:0:20 -200:0:0:70
-200:0:0:70 -100:0:0:130
-100:0:0:130 -50:0:0:205
-50:0:0:205 0:0:191:191
0:0:191:191 0.1:57:151:105
0.1:57:151:105 100:117:194:93
100:117:194:93 200:230:230:128
200:230:230:128 500:202:158:75
500:202:158:75 1000:214:187:98
1000:214:187:98 2000:185:154:100
2000:185:154:100 3000:220
3000:220 5000:250
5000:250 20000:255
