Hello, so recently i got a drawing tablet and tried using krita, so i made a drawing and i was colouring when i wanted to change 1 colour’s colour. so i tried to use the fill tool to change it, when i filled it, it changed the colour beside it too but to a diffrent colour (i wanted to make a dark purple into light green and beside it was normal bright purple.) but when i did it it changed dark purple to the green i wanted, but the purple turned light blue, is there any way to change this? every other drawing program i use dosent do this but when i try to draw thin lines they get really weird only krita dosent do this.
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You need to adjust Treshold value in the Tool Options for the Fill Tool.
Btw are you aware of Colorize Mask? https://docs.krita.org/en/reference_manual/tools/colorize_mask.html or if you prefer a video: https://www.youtube.com/watch?v=HQdx6H9BIGs
I always thought that the Threshold value made a decision about whether to fill a region with the flood fill colour or not to fill it.
I’ve only ever filled shapes and entire layers but not used it to change a colour that had similar colours close to it.
It seems that the Threshold value makes a decision about how much of the flood fill colour to add to other colours.
I’ve learned something new 
Yes, it can fill with semi-transparency which means it changes the color 
Thank you so much!!!