| node name | type | flags | description | 
|---|---|---|---|
| background | rnd_cfn_color | 0 | [librnd] background and cursor color ... | 
| off_limit | rnd_cfn_color | 0 | [librnd] on-screen background beyond the configured drawing area | 
| grid | rnd_cfn_color | 0 | [librnd] on-screen grid | 
| cross | rnd_cfn_color | 0 | [librnd] on-screen crosshair color (inverted) |