Look of Toolbox>

[FransHarderwijk]

Hi here, 

I use Gimp 3.0 in Windows on a Lenovo Thinkpad W520 laptop since two days. 
I previously used older Gimp-versions as a novice. 

Tiny problem (perhaps a simple question): 
I don't like the way my Tool Options dialog looks. See the attachment. 
I don't like the 'hand' shaped cursor (too big and dark) and the black popup. 

I cannot find what to change in Edit>Prefecences>...
My Interface>Theme is System. 
My Interface>Icon Theme is Legacy. 

Thanks in advance for advice. 

Regards, Frans van Zelm