Yes, that means the color is not right for you. That happened to me horribly with Clinique concealers. But I have super fair skin with a pinkish tone and cliniques colors seem to be geared more toward olive/brownish tones.
I'm obsessive about all lighting situations. I had the most trouble with making sure it wasn't noticeable in fluorescent lighting. One thing I learned to do when concealing slightly raised (or massively raised) acne, was to apply the thinnest most possibly bit to the entire spot, then I press a piece of kleenex on it to soak up any excess (being very careful not to wipe or rub) and then I only apply concealer to the bottom. Basically, like i'm just filling in the shadow that raised acne can make. I don't say this like it was easy to do, but filling in the shadow is what keeps mine 100% invisible in ALL lighting. If you apply too much to the whole spot, it can really highlight the bump. Makes it look like a beacon!
Keep working with it and if the liquid is too slippery to work with, try a thicker one.
These are weird tips, but I'll pass them along anyway. My friends tell me I'm too obsessive with my concealer, but i have to be since I can't wear powder/foundation and I want all of my old acne marks to be completely invisible.
I use my 4th finger to start out, then depending on the mark, i use this sponge thing on the end of this eyeliner pencil because it comes to a very fine point. (can't find any other make up sponges that are small enough) Perfect for filling in those shadows i was talking about. I also use a toothpick for any tiny needle point areas that are too small for my finger or sponge thing. The kleenex thing helps take that "beacon" away. And lastly- I take my hand mirror and i do a 360 in my bathroom to see if i can see it at all. This is where I check to see if I need to do more shadow filling.
One thing to remember- you're looking very closely in the mirror at your own face. People are never that close (unless they are the "close talker" kind) So be sure to take a step back. If you're getting better at it, chances are, you won't be able to see the mark you're concealing. This will help keep you from being too self conscious about it.
Keep at it!