The speaker feels invisible and worn down, and the opening plea, "Color me blank," sounds like a wish to vanish completely. Others think they can see through them, yet the speaker feels they misread what is really there. The "upward spiral" turned downward, and the speaker describes sinking into madness after trying hard and getting nowhere.
What makes the poem painful is its tangle of feelings about someone who tries to help. The speaker admits the effort, but says it only pushed them deeper into darkness. Then comes a confusing moment of gratitude: a laugh, a flicker of happiness, followed by the question "Why do you make me so happy?" The crumbling walls and falling bricks suggest a mind coming apart, and the line "you can't save them all" hints that the helper's limits are part of the hurt.
The mood is exhausted, raw and defensive. The ending turns the opening wish into something quieter: if the speaker goes unnoticed, they might stop feeling blue and stop seeing red.