I'm not sure if this is relevant or not in FEU s̶i̶n̶c̶e̶ ̶f̶e̶u̶ ̶d̶o̶e̶s̶n̶'̶t̶ ̶h̶a̶v̶e̶ ̶a̶s̶ ̶m̶a̶n̶y̶ ̶h̶a̶c̶k̶i̶n̶g̶ ̶n̶00b̶s̶ ̶a̶s̶ ̶S̶F̶ , but anyway, here's a port of my SF tutorial of how to make FERecolor palette templates, for making palettes for animations that don't come with FERecolor and custom animations. You'll need Usenti, Paint and Feditor Adv Render Edition, in case you need to rip some frames.
Step 1: The Sheet.
First thing you need to do is get your sheet. Let's take for example the zombie. Gather a few frames of your desired animation on a new file in paint and then save it in the "battle_sprites" folder in FERecolor. Keep in mind that having more than 1 sprite is not absolutely necessary, but it's nice.
Step 2: FERecolor.
Now you are ready to open it in FERecolor, so well... Open it in FERecolor. So now you can edit the colours by changing the number on the RGB scale. So we're ready now, right? Not quite yet.
See all those numbers on the far right hand side, each accompanied by a "Reset" button? That's the colour's index. What's that, you say? Well, editing the colours is not enough because each colour has to be at the right index, in other words, it has to be in the right position, otherwise you'll get a messed up palette when you insert it. To find out how to learn each colour's correct index, join me in Step 3.
Step 3: Making the Palette Index.
So now, open up the Feditor-processed sheet in Usenti (Not Paint, Usenti) and look at the palette.
Let's have a closer look.
The game has this system where it reads the palette from right to left, (kind of like how Arabic reads). There, I conveniently numbered them for you! And so now, all you have to do is number the colours in FERecolor.
And boom! That's it. You're good to go. Now, in order to insert the palette itself, press that "Copy hex to clipboard" button and do the rest in BSPalette Assembler.
Now on a side note, while in the middle of making this tutorial, I was informed by my friend and fellow palette scholar Teraspark that there is an alternate, simpler way to do this, which some of you might find easier, so I decided to keep both methods just in case.
Take your sheet and open it in either paint or usenti, and make sure it has the palette inside it.
Now take the palette and flip it horizontally so that the black is looking to the right. Then, take the 2nd row and place it to the right of the first row. It should look like this:
Just make sure that the palette is parallel both horizontally and vertically to any other pixel, like in the image below:
Now just open it in FERecolor and the program will automatically sense the correct palette index! Isn't that convenient. And it works equally well, too!