Qt - make selection background have similar background to item - css

Question

How can I make the background for when an item is selected to be some sort of blend of current cell background?
The default item-selection background is blue and say if my cell is red, then I'd want it to be red with slightly less opacity:
Example image of how it is
Example image of how I'd like it to be
I have tried setting the color to be transparent:
setStyleSheet("selection-background-color: transparent")
And also the rgba feature with opacity 1%:
setStyleSheet("selection-background-color: rgba(255, 255, 255, 1)")
But neither retain the original color

Answer 1

This example will give you some insight how to manage with tablewidgets and item
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
data = {'col1':['red','blue','green']}
class MyTable(QTableWidget):
def __init__(self, data, *args):
QTableWidget.__init__(self, *args)
self.data = data
self.setmydata()
self.resizeColumnsToContents()
self.resizeRowsToContents()
self.setStyleSheet("""QTableView::item:focus
{
selection-background-color: rgba(255, 0, 0, 128);
}""")
def setmydata(self):
horHeaders = []
for n, key in enumerate(sorted(self.data.keys())):
horHeaders.append(key)
for m, item in enumerate(self.data[key]):
newitem = QTableWidgetItem(item)
self.setItem(m, n, newitem)
colorVal = "Qt.%s" % item
self.item(m, n).setBackground(eval(colorVal))
self.setHorizontalHeaderLabels(horHeaders)
def main(args):
app = QApplication(args)
table = MyTable(data, 3, 1)
table.show()
sys.exit(app.exec_())
if __name__=="__main__":
main(sys.argv)