One cherry per level look, for the ColecoVision port. Each 8-pixel row of a tile can show 2 colours (TMS9918 Screen 2): rows that break it get a red mark and block saving. Aim for the arcade original, borrow from the romhack, start from my draft.
Dot = this level's dirt colours. Click or drag to paint; Alt-click or the eyedropper picks a colour; Ctrl/⌘ Z undoes.