Based on the plots, i see it is placed for an uplink waveform generation example.
The uniform color for QPSK with green color, represents the DM-RS symbols locations. Since in the DM-RS OFDM symbol locations, the modulated symbols are QPSK, it has uniform color in that symbol (same amplitude). In another OFDM symbols, the modulated symbols are not having the same amplitude.
From the image of BWP 1, it can be inferred that there are 4 DM-RS locations for your shared channel setup.
Hope this helps.