#userwintersoldado

Step 1: Preparing your gif with base colouring

So first you want to do your base colouring for your gif in timeline mode, which I've explained here. I keep my gifs short (ideally 40 frames or less) since this colouring process is tedious!

I make sure that in my hue/saturation layer, I turn the saturation in the yellow, green, cyan, and blue tabs all down to -100 (and for the yellows I usually add around +20 to +60 in lightness)

Here's my gif with the base colouring that I'll be starting with:

Note: turning down the saturation in almost all the colours gives you that nice silver/grey neutral background to paint on top of. It's a lot less noticeable when your painted layers aren't perfect

Step 2: Converting to Frame Animation Mode

I use the save action from this action pack to convert my gif from timeline mode to frame animation mode.

You cannot edit your base colouring from this point onwards!

Step 3: Using Select Subject

If you're recording an action this is the step you would *start recording*

This is what your window should look like:

Making sure your first frame and first layer are selected, go to Select at the top of your window and click Subject

You should then see the marching ants outline around the person in your gif

You then want to create a new solid colour fill layer (which can be found when you click that little circle icon at the bottom of your layers panel), and set the layer blending mode to colour.

The layer mask will automatically be created since you had the marching ants outline.

Since my person is in colour and not the background, I want to invert the layer mask by clicking on it and using command + i (or ctrl + i), and now this is what it looks like:

Note: Select subject isn't always perfect!!!, depending on how cluttered the scene is and how much contrast there is between your person and the background, select subject could either do a really good job like it did here, or screw up a little like it did here:

That's okay though because it still gives us a good base to start from! We can fix any issues by painting with black and white brushes on the layer mask.

Step 3.5: Create clipping mask

Thanks to @wolfchans for telling me about this because it gives us back a little bit of flexibility when colouring frame by frame! Instead of merging down, we can make a clipping mask instead. Right click the solid colour fill layer and select create clipping mask.

If you're recording an action, it's at this point where I would *stop recording*

Step 4: Fixing the layer mask if needed

So now I want his jacket and t-shirt to also be purple, and to show his fingers behind the glass. I make sure the layer mask is selected, and paint with a brush at 60-70% hardness (painting with black erases the colour, painting with white shows the colour). User smaller brush sizes to paint smaller details!

This is what my canvas and layer mask look like now.

Step 5: Repeat

Now I click on my second frame and second layer, and repeat steps 3-4. As you can see, using the clipping mask allows you to still see and edit the colouring of the previous frame, just make sure you click on the right frame and it's corresponding layer when you're doing further editing.

This is where an action is super helpful in cutting down all the repetitive steps and clicks you need to do. So at this point I'd just play the action I created and paint on the layer mask as needed.