This was a really fun experience!
The blob looks adorable! Good job on making it move a little when idle - it makes it feel much more alive - but maybe it blinking would have been nice too.
The explanations are helpful, although there wasn't one for the energy fields that make you drop their color when you go through them - but it was intuitive enough for me to figure that out.
The music was well-chosen, and in my opinion reflected the puzzle atmosphere of this game well. That being said, for a game about a blob that escaped from the mad scientist, it looks perhaps a little too cheerful.
I love that basically-everything you do has a sound associated with it - that's some good feedback. Visual feedback would also be nice(e.g. effects for when you place failed blobs and put them on the power).
The blob doesn't move directly to where I clicked, which made me click a few extra times, and the camera movement with a mouse was a little fiddly.
It would be a cool idea to equip the color that you pick up, because I have to keep pressing SPACE each time I pick a color up.
All of these things being said, this game was really fun, and I loved both the concept and the mechanics. Also, unlike me you actually submitted something for the Lost Relic Games Jam, so good job on that!
I wish you all the best in your Game Dev journey!