There is no measurement of acceleration/displacement/stress in a frequency analysis. The only outputs are the mode shape and the natural frequencies. If you want that data, you need to go to Simulation Premium, linear dynamic analysis.
The pink dot looks like a graphical artifact from a beam joint. It shouldn't be showing. But maybe something that I'm not thinking of. What kind of graphics card are you using? If you run an analysis on a block or run another fresh study, do you see it?