Don't think you can tint just the inside of the canopy with RIT DYE, you can however use the spray tint to tint the inside of the canopy....To use the RIT you have to submerge the entire canopy in hot (not boiling) water before you trim it, if you have already trimmed the canopy hten don't waist your time with the RIT or you will be buying another canopy. The hot water will roll it up like a cigar, trust me, I know from experience. If you usse that spray try and get your hands on SPATZ modelers paint, this stuff works great, if not then use Testes or something like that( I forgot the name) That one works well too..Good Luck.