The first picture below shows a traditional OHLC bar chart. The colors are set to alternate each month.
The second picture shows a candlestick chart with the up bar set to hollow and the down bars set to solid.
Fixed Price Time Chart
Below is a picture of an OHLC bar chart that uses a fixed price time scale. The fixed scale is set to 2 points per bar. This is a corn futures chart so each square on this chart has a dollar value of $1000 or 20 points.