Here are some photos of two recently finished single ended 45 amplifiers. Both with different driver tubes, and different color schemes.
This one uses a directly heated triode as driver. Transformers are Tango. Black anodized metal plate, handles also in black. Capacitors are ASC X386S series, varnished in metallic bordeaux red.
The wooden frame is made of birch wood.
The power supply is external in a chassis in the same style:
The high voltage power transformer and capacitors in the power supply are hidden under aluminum covers varnished in a metallic graphite tone.
The photo below shows the connector on the amp chassis.
Also with external PSU. This time only with one cover, the caps are visible: