I put a 4' tall potted lilac bush in the garage over winter. It survived there last year just fine along with some other large plants.

Well this winter we needed room in the garage and moved it into the basement and never put it back. It's a lot warmer in there evidently because now there are 10" new growth shoots all over the lilac with very very pale green leaves.

If I continue as normal and put it outside after the frost is past will it be alright and maybe turn green again?

Thanks!