This poem reminds me of many things. The first is Jesus and the grace of God because you repeat how the shame has been washed- a concept that's used repeatedly to describe how our shame and past are all washed away through His grace.
I also love how you say "there's a rainbow in your heart" and describe all the negative as outside and positive as inside, hinting that goodness comes from within. I like how you said the "life in survived trees" because that hints there's been a massive storm and it stripped everything away until there was only the goodness left. Beautiful metaphors in this poem.
It also reminds me of the song After The Rain by Rev Theory, so that's good, too. Sometimes, storms do indeed bring clarity.

Great poem! I love how peaceful it is.