Honestly it goes way beyond the colors. It's a line art issue with me. The fighter mode is somewhat tolerable, but I really dislike the batroid mode.
The big cone sticking out of the chest just looks... odd to me. It just looks cheap and strange to me for a Valk growing up with the original Macross. The first time I saw it I was like.. wow that's one ugly robot. Then The legs are too thick and the heads are like football helmets. The fighters themselves are too back heavy. It reminds me of Hikaru's stunt plane in the first episode. Nothing intimidating about it. Like a flying turkey. Haha.
I appreciate that it's well designed, but it doesn't make me want to buy one.