To be honest I'm disappointed too.
^Yeah, me too...

Ok ok, I'm not the biggest C-ute fan on the planet but they are all great singers and I like them so that's not the reason I don't like this album (<--- does this make sence?

)
Here's my personal thoughts on the album-songs:
Image Color: Well, it's a nice tune but a total waste of Yajima/Suzukis strong charisma. They deserve a more powerful song (like Tokkaiko Junjou). And the song is cute but plain...
Otome COCORO: No instans win but I think this song just needs time. Neat song but once again a waste of the C-ute power...
Homerare Nobiko no Theme Kyoku: Improvement! Much better then the previous ^. Could be better, but definitely the better one on the album.
Sweeeets→→→Live: This song is ok. Alittle boring maybe but Arihara/Okai are a strong duo so they save the song.
Hare no Platinum Doori: Good song but why put Saki/Mai on this? I think the whole group would make it more powerful. But yeah, this song is also one of the better on the album.
Do Don Ga Don Ondou: Erika is amazing in this song. It's my album favorite even though it's one of the less serious songs it rules! Wasn't a big Erika fan before but this is awesome! Erika

(The music reminds me of the china-board on Mario Party 7. :p)
So overall I think it's a waste to give C-ute these songs. Good album but not great.

(^Remember these are
my personal opinions)