The 2 skins included in this app are so configurable that most (if not all) the features the other skins offer can be achieved.

The alternative layout has the navigation bar at the top.
It has many configurable elements:
Over 50 colours to chose from
Toggle Waveseek show the default static waveseek progress bar
Toggle Seekbar show the seekbar
Hide either waveseek seekbar or both
Toggle the Spectrum show the sound Spectrum at the bottom of the sceen
switch off album blur background so that the selected background colour shows
round or square albumart
select circle or square shape around labels
select the colour of text to be used throughout the app
size the text from small to large
set the colour of icons
set colour of circles/squares
set the colour of the navigation bar icons
set background colour of android navbar and statusbar including transparent
select the background colour of the navigation bar
select the colour of the circles or squares around buttons
select the overall background colour
a choice of sets of several different play buttons
a choice of different types of knobs used in the equaliser screens

Important notes:
1. As I do not have a vast number of different devices to test there may still be some devices where the layout is not quite correct.
If this is the case please do not leave negative feedback but contact me instead by email with some screenshots. I will then try and correct it.
2. It has been found that the app will not install on Huawei devices with Android v7. Later versions are fine.