Background:
Block:
Open:
Visiting:
Visiting Peak:
Path:
Source:
Destination:
Traversed: 
color_bg = 0x00202e
color_block = 0x402510
color_open = 0x979a9a
color_visiting = 0x6db3d1
color_visiting_peak = 0x6db3d1
color_path = 0xeacc38
color_source = 0xc63d0a
color_destination = 0x23c61e
color_traversed = 0x5d5fae